galactosyln.
/ɡəˈlaktə(ʊ)sʌɪl/, /ɡəˈlaktə(ʊ)sɪl/, U.S. /ɡəˈlæktoʊˌsɪl/ Biochemistry.
A radical or group derived from galactose by loss of a hydroxyl group. Usually attributive or as a formative element in names of compounds.
ΚΠ
1921 Chem. Abstr. 15 2837 Galactosyl glucosyl selenide octaacetate..was prepd. from acetobromoglucose and acetobromogalactose with alc. K2Se.
1948 W. W. Pigman Chem. Carbohydrates x. 458 It [sc. verbascose] has the galactosyl group substituted at carbon 6 of the terminal galactose unit of the stachyose.
1961 A. A. Benson in W. D. McElroy & B. Glass Symp. Light & Life iv. 395 The major chloroplast lipids are the galactosyl monoglycerides and the phosphatidyl glycerols.
2002 O. Lamikanra Fresh-cut Fruits & Veg. vi. 156 The enzyme..is specific for galactosyl residues in the β-configuration.
Compounds
galactosyl transferase n. an enzyme that brings about the transfer of a galactosyl group from one molecule to another.
ΚΠ
1956 J. E. Gander et al. in Arch. Biochem. & Biophysics 60 260 Mammary tissue from lactating cows contains..a galactosyl transferase which catalyzes the transfer of the galactosyl group.
1988 L. Stryer Biochem. (ed. 3) xiv. 340 This reaction is catalyzed by lactose synthase, which consists of a catalytic subunit (galactosyl transferase) and a modifier subunit (α-lactalbumin).
1996 N.Y. Times (Nexis) 30 Apr. c1 He has shown that antibodies to galactosyl transferase stop sperm from binding to eggs.
This is a new entry (OED Third Edition, November 2010; most recently modified version published online March 2022).
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n.1921